CN109936694A - Optical communication apparatus comprising reference light source and the transmission of corresponding information and method of reseptance - Google Patents
Optical communication apparatus comprising reference light source and the transmission of corresponding information and method of reseptance Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims abstract description 21
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/70—SSIS architectures; Circuits associated therewith
- H04N25/76—Addressed sensors, e.g. MOS or CMOS sensors
- H04N25/78—Readout circuits for addressed sensors, e.g. output amplifiers or A/D converters
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/70—SSIS architectures; Circuits associated therewith
- H04N25/76—Addressed sensors, e.g. MOS or CMOS sensors
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Abstract
A kind of optical communication apparatus, comprising: at least one light source data, for transmitting information；At least one reference light source, for assisting in identifying the information of light source data transmitting；And controller, it is configured as controlling each light source data and works at least two modes including first mode and second mode, wherein, for transmitting different information, controller, which is additionally configured to control each reference light source, works at least one of first mode and second mode mode for first mode and second mode；Wherein, for each light source data or reference light source, in the flrst mode, the attribute for the light that the light source issues is changed with first frequency, to show striped on the image of the light source obtained when shooting by cmos image sensor to the light source, under the second mode, striped is not presented on the image of the light source obtained when shooting by cmos image sensor to the light source or shows the striped different from the striped under first mode for the light which issues.
Description
Technical field
The invention belongs to optical information technology field, relate more specifically to a kind of optical communication apparatus comprising reference light source and
Corresponding information transmission and method of reseptance.
Background technique
Bar code and two dimensional code have been widely adopted to encode information.When with particular device or software scans this
When a little bar codes and two dimensional code, corresponding information will be identified.However, bar code and two dimensional code identification distance very by
Limitation.For example, when being scanned with mobile phone camera to it, which has usually to be placed into one for two dimensional code
In closer distance, which is generally only 15 times of the width of two dimensional code or so.Therefore, for identify at a distance (such as
It is equivalent to 200 times of distance of two dimensional code width), bar code and two dimensional code generally can not be realized, or must customize very big
Bar code and two dimensional code, but this can bring the promotion of cost, and in most cases due to other various limitations be can not
It is able to achieve.
Cmos imaging device is the image device being widely used at present, as shown in Figure 1, (also referred to as including image-sensitive unit
Imaging sensor) array and some other elements.Image sensor array can be photodiode array, each image
Sensor corresponds to a pixel.Each column imaging sensor both corresponds to a column amplifier, the output signal of column amplifier
It is sent to A/D converter (ADC) later and carries out analog-to-digital conversion, is then exported by interface circuit.For image sensor array
In any image sensor, expose start when it is existing reset, after then waiting the time for exposure, signal value is read.
Cmos imaging device generallys use rolling shutter imaging mode.In CMOS image device, the reading of data is serial, institute
It also can only sequentially be carried out line by line in a manner of being similar to assembly line by clearing/exposure/reading, and in the institute of image sensor array
A frame image is synthesized after the completion of having row all to handle.Therefore, entire cmos image sensor array actually exposes line by line
(cmos image sensor array may also be in such a way that each multirow exposes together in some cases) of light, which results in
There are small time delays between each row.It, can be in cmos imaging device when light source is flashed with certain frequency due to the small time delay
Some undesirable stripeds are showed on the image of shooting, influence shooting effect.
It has been found that can use the striped on the image of cmos imaging device shooting theoretically to transmit information
(it is such to be similar to bar code), and attempt to transmit information as much as possible by striped, but this is usually required so that CMOS
Image device and light source are close as far as possible, and are preferably at approximately fixed distance always, and it also requires the fine time is same
Step detects etc. to the accurately identifying of the boundary of each striped, to the accurate of the width of each striped, therefore, in practice its
Stability and reliability are simultaneously unsatisfactory, are not also widely used.
Summary of the invention
In order to realize the remote identification to information, one aspect of the present invention is related to a kind of optical communication apparatus comprising:
At least one light source data, for transmitting information；
At least one reference light source, for assisting in identifying the information of the light source data transmitting；And
Controller, is configured as controlling each light source data and works at least two modes, at least two mode
Including first mode and second mode, wherein the first mode and the second mode are described for transmitting different information
Controller, which is additionally configured to control each reference light source, works at least one of the first mode and second mode mode；
Wherein, for each light source data or each reference light source, in the first mode, the light which issues
Attribute is changed with first frequency, on the image of the light source obtained when being shot by cmos image sensor to the light source
Striped is showed, in the second mode, the light which issues is when shooting the light source by cmos image sensor
Striped is not presented on the image of the light source obtained.
Preferably, the controller is configured as controlling the reference light source work at least one described reference light source
In the first mode.
Preferably, when the controller control any data light source working when first mode, the controller into
One step controls the phase of the light source data, so that it is identical as the phase for the reference light source for equally working in the first mode
Or it is different.
Another aspect of the present invention is related to a kind of method that information is transmitted using light source, and the light source includes for passing
Pass at least one light source data of information and at least one reference light of the information for assisting in identifying the light source data transmitting
Source, which comprises
Each light source data, which is controlled, according to the information to be transmitted works in one of at least two modes, at least two mould
Formula includes first mode and second mode, wherein the first mode and the second mode are for transmitting different information；
It controls each reference light source and works in the first mode or second mode,
Wherein, for each light source data or each reference light source, in the first mode, the light which issues
Attribute is changed with first frequency, on the image of the light source obtained when being shot by cmos image sensor to the light source
Striped is showed, in the second mode, the light which issues is when shooting the light source by cmos image sensor
Striped is not presented on the image of the light source obtained.
Another aspect of the present invention is related to a kind of optical communication apparatus, comprising:
At least one light source data, for transmitting information；
At least one reference light source, for assisting in identifying the information of the light source data transmitting；And
Controller, is configured as controlling each light source data and works at least two modes, at least two mode
Including first mode and second mode, wherein the first mode and the second mode are described for transmitting different information
Controller, which is additionally configured to control each reference light source, works at least one of the first mode and second mode mode,
Wherein, for each light source data or each reference light source, in the first mode, the light which issues
Attribute is changed with first frequency, on the image of the light source obtained when being shot by cmos image sensor to the light source
Striped is showed, in the second mode, the attribute for the light which issues is changed with second frequency, to scheme by CMOS
It is showed on the image of the light source obtained when being shot as sensor to the light source different from the striped under the first mode
Striped.
Preferably, the controller is configured as controlling the reference light source alternating at least one described reference light source
Work in the first mode and the second mode.
Preferably, wherein when controller control any data light source working is in the first mode or described second
When mode, the controller further controls the phase of the light source data so that its with equally work in the first mode
Or the phase of the reference light source of the second mode is identical or different.
Another aspect of the present invention is related to a kind of method that information is transmitted using light source, and the light source includes for passing
Pass at least one light source data of information and at least one reference light of the information for assisting in identifying the light source data transmitting
Source, which comprises
Each light source data, which is controlled, according to the information to be transmitted works in one of at least two modes, at least two mould
Formula includes first mode and second mode, wherein the first mode and the second mode are for transmitting different information；
It controls each reference light source and works in the first mode or second mode,
Wherein, for each light source data or each reference light source, in the first mode, the light which issues
Attribute is changed with first frequency, on the image of the light source obtained when being shot by cmos image sensor to the light source
Striped is showed, in the second mode, the attribute for the light which issues is changed with second frequency, to scheme by CMOS
It is showed on the image of the light source obtained when being shot as sensor to the light source different from the striped under the first mode
Striped.
Another aspect of the present invention is related to a kind of device that information is transmitted using light source, including for the light source
The controller controlled, the controller are configured for realizing above-mentioned method.
Another aspect of the present invention is related to a kind of method of information for receiving and being transmitted by above-mentioned optical communication apparatus, the side
Method includes:
The optical communication apparatus is imaged by cmos image sensor；
Extract the image of at least one light source data and the image of at least one reference light source；
Compare the image of at least one light source data and the image of at least one reference light source；And
The information of at least one light source data transmitting is determined based in part on the comparison result.
Preferably, wherein the relatively more described image of at least one light source data and the figure of at least one reference light source
Picture includes: related between the image and the image of at least one reference light source of judgement at least one light source data
Property.
Another aspect of the present invention is related to a kind of device of information for receiving and being transmitted by above-mentioned optical communication apparatus, including
Cmos image sensor, processor and memory are stored with computer program in the memory, and the computer program is in quilt
The processor is implemented for above-mentioned method when executing.
Another aspect of the present invention is related to a kind of storage medium, wherein it is stored with computer program, the computer journey
Sequence is implemented for above-mentioned method when executed.
Detailed description of the invention
The embodiment of the present invention is described further referring to the drawings, in which:
Fig. 1 is the schematic diagram of cmos imaging device；
Fig. 2 is the directional diagram that cmos imaging device obtains image；
Fig. 3 is the light source according to one embodiment of the present of invention；
Fig. 4 is the light source according to another embodiment of the invention；
Fig. 5 is the imaging timing diagram of cmos imaging device；
Fig. 6 is another imaging timing diagram of cmos imaging device；
Fig. 7 shows the image when light source working is in first mode in different phase on cmos imaging device；
Fig. 8 shows the CMOS image device when light source working is in first mode according to one embodiment of present invention
Timing diagram is imaged；
Fig. 9 shows the CMOS image device when light source working is in second mode according to one embodiment of present invention
Timing diagram is imaged；
Figure 10 shows the cmos imaging device when light source working is in first mode according to another embodiment of the invention
Imaging timing diagram；
Figure 11 shows the cmos imaging for realizing the striped different from Fig. 8 according to another embodiment of the invention
The imaging timing diagram of device；
Figure 12-13 show the light source obtained under different settings two kinds have stripe pattern；
Figure 14 shows a kind of no stripe pattern of the light source of acquisition；
Figure 15 is an image of the optical label according to an embodiment of the invention using three arbitrary sources；
Figure 16 is an image of the optical label according to an embodiment of the invention including positioning identifier；
Figure 17 shows it is according to an embodiment of the invention include a reference light source and two light source datas
Optical label；
Figure 18 shows an imaging timing diagram of the cmos imaging device for optical label shown in Figure 17.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, pass through below in conjunction with attached drawing specific real
Applying example, the present invention will be described in further detail.
One embodiment of the present of invention is related to a kind of optical communication apparatus, can transmit difference by issuing different light
Information.The optical communication apparatus is also referred herein as " optical label ", and the two may be used interchangeably in entire the application.Light
Communication device includes light source and controller, which is configured as controlling the light source working in two or more modes,
The two or more modes include first mode and second mode, wherein in the first mode, the light source issues
The attribute of light changed with first frequency, to transmit the first information, in the second mode, the category for the light that the light source issues
Property changed with second frequency or do not changed, to transmit second information different from the first information.
The attribute of light refers to any attribute that cmos imaging device can identify in this application, such as it can be with
It is the appreciable attribute of the human eyes such as intensity, color, wavelength of light, is also possible to other non attributes of human eye, such as
Intensity, color or the wavelength shift of electromagnetic wavelength outside human visible range or any combination of above-mentioned attribute.Therefore,
The attribute change of light can be single attribute and change, and the combination for being also possible to two or more attributes changes.When
When selecting the intensity of light as attribute, light source can be opened or closed simply by selection and realized.Referred to below for simple
For the sake of, change the attribute of light to open or close light source, it will be appreciated by a person skilled in the art that for changing the attribute of light
Other modes be also feasible.It should be noted that can with the attribute of the light of first frequency variation in above-mentioned first mode
With identical or not identical as the attribute of light changed in above-mentioned second mode with second frequency.Preferably, in first mould
The attribute of changed light is identical in formula and second mode.
When light source in the first pattern or second mode work when, can be used cmos imaging device or have cmos imaging
Light source is imaged in the equipment (such as mobile phone, tablet computer, intelligent glasses etc.) of device, that is, the side for passing through rolling shutter
Formula is imaged.It is illustrated for hereinafter using mobile phone as cmos imaging device, as shown in Figure 2.The row of the mobile phone is swept
It retouches direction and is shown as vertical direction in Fig. 2, it will be appreciated by a person skilled in the art that the difference according to bottom hardware configuration,
Direction of line scan is also possible to horizontal direction.
Light source can be various forms of light sources, if its it is a certain can be with not by the attribute that cmos imaging device perceives
Same frequency is changed.For example, the light source can be a LED light, the array being made of multiple LED light, display screen
Or the irradiation area (such as the irradiation area of light on wall) of a part therein or even light can also be used as light source.It should
The shape of light source can be various shape, such as circle, square, rectangle, strip, L shape etc..It may include various normal in light source
The optical device seen, such as light guide plate, softbox, diffusing globe etc..In a preferred embodiment, light source can be by multiple
The two-dimensional array that LED light is constituted, a dimension of the two-dimensional array are longer than another dimension, it is preferable that ratio between the two
Example is about 6-12:1.For example, the LED light array can be made of the multiple LED light to form a line.When luminous, the LED light
Array can be rendered as the light source being generally rectangular, and the operation of the light source is controlled by controller.
Fig. 3 shows light source according to an embodiment of the invention.In use cmos imaging device to light shown in Fig. 3
When source is imaged, the line direction of the long side and CMOS image device that preferably make light source shown in Fig. 3 is (for example, shown in Fig. 2
Mobile phone direction of line scan) it is vertical or substantially vertical, stripeds much more as far as possible to be imaged out if other conditions are the same.
However, user and the direction of line scan of its mobile phone is not known about sometimes, in order to guarantee that mobile phone can be known under various postures
Not, and under vertical screen and transverse screen it can reach maximum identification distance, light source can be multiple rectangular combinations, example
Such as, L shape light source as shown in Figure 4.
In another embodiment, light source can be not limited to planar light source, but may be implemented as a three-dimensional light source,
For example, the cylindrical light source of a strip, cube light source, etc..The light source can for example be placed on square, be suspended in
The approximate centre position of indoor spaces (such as dining room, meeting room etc.), so that the neighbouring user positioned at all directions is ok
The light source is shot by mobile phone, to obtain the information that the light source is transmitted.
Fig. 5 shows the imaging timing diagram of cmos imaging device, and each of these row corresponds to the one of cmos imaging device
Line sensor.When each row of cmos imaging sensor array is imaged, two stages are related generally to, when respectively exposing
Between and readout time.The time for exposure of each row is likely to occur overlapping, but readout time will not be overlapped.
It should be noted that a small amount of row is schematically shown only in Fig. 5, in actual CMOS image device, according to
Rely the difference in resolution ratio, usually there are thousands of line sensors.For example, having 1920 × 1080 for 1080p resolution ratio
A pixel, number 1080 indicate 1080 scan lines, and number 1920 indicates that every row has 1920 pixels.1080p is differentiated
Rate, the readout time of every a line, substantially 8.7 microseconds were (that is, 8.7 × 10-6Second).
If a large amount of overlappings occurs in the time for exposure too long time for exposure caused between adjacent rows, may be in imaging
Reveal the striped of obvious transition, for example, a plurality of between ater pixel column and pure white pixel column is with different gray scales
Pixel column.Present invention contemplates that clearly pixel column as far as possible can be showed, for this purpose, can be to cmos imaging device (such as mobile phone)
Time for exposure be configured or adjust (for example, be configured or adjust by the APP installed on mobile phone), it is opposite to select
The shorter time for exposure.In a preferred embodiment, the time for exposure can be made to be substantially equal to or less than the reading of every a line
Time out.By taking 1080p resolution ratio as an example, the readout time of every a line substantially 8.7 microseconds, in such a case, it is possible to examine
Consider and the time for exposure of mobile phone is adjusted to about 8.7 microseconds or shorter.Fig. 6 shows cmos imaging device in this case
Imaging timing diagram.In this case, the time for exposure of every row does not overlap substantially or lap is less, thus
Can obtain in imaging has the striped for comparing clearly boundary, is easier to be identified.It should be noted that Fig. 6
Only a preferred embodiment of the present invention, longer (such as twice, three times of the readout time equal to or less than every a line
Or four times etc.) or the shorter time for exposure be also feasible.For example, having stripe pattern shown in Figure 12 of the application and 13
Imaging process in, the readout time of every a line substantially 8.7 microseconds, and set every row exposure time be 14 microseconds.Separately
Outside, in order to show striped, the duration of a cycle of light source can be set to twice or so or longer of exposure time, preferably
Ground can be set to four times of exposure time or so or longer.
Fig. 7 is shown when making light source working in first mode using controller in different phase in cmos imaging device
On image, in the first mode, with certain frequency change light source issue light attribute, in this case, it is open and close
Black out source.
The top of Fig. 7 shows the state change map in the light source of different phase, and lower part is shown in the different phase light
Image of the source on cmos imaging device, wherein the line direction of cmos imaging device is vertical direction, and is swept from left to right
It retouches.Since cmos imaging device acquisition image is progressive scan, when shooting high frequency flicker signal, a frame obtained
Part corresponding with the imaging position of light source will form striped as shown in the lower part of Figure 7 on image, specifically, in the period 1, light source
It opens, bright fringes is presented in the scan line of the leftmost portion exposed in the period；In the period 2, light source is closed, in the period
Dark fringe is presented in the scan line of exposure；In the period 3, light source is opened, and bright fringes is presented in the scan line exposed in the period；When
Section 4, light source are closed, and dark fringe is presented in the scan line exposed in the period.
It can be by the frequency of setting light source scintillation, or the duration that setting light source opens and closes every time, to adjust out
The width of existing striped, it is longer to open or close the time and generally correspond to broader striped.For example, for feelings shown in fig. 6
Shape, if the duration that light source is opened and closed every time is disposed as being substantially equal to the exposure of every a line of cmos imaging device
Between (time for exposure can be configured by the APP installed on mobile phone or by hand setting), then can be presented in imaging
Width is the striped of only one pixel out.In order to realize the remote identification to optical label, striped should be made more narrower better.But
In practice, due to interfering, synchronize etc. light, width be only one pixel striped may less stable, or less
It easily identifies, therefore, in order to improve the stability of identification, preferably implements the striped that width is two pixels.For example, for figure
Situation shown in 6 can be disposed as being substantially equal to cmos imaging device by the duration for opening or closing light source every time
About 2 times of the exposure time of every a line, Lai Shixian width are the striped of about two pixels, specific as shown in Figure 8, wherein
The signal on the top of Fig. 8 is light source control signal, and high level corresponds to the unlatching of light source, and low level corresponds to the pass of light source
It closes.In the embodiment shown in fig. 8, about 50% is set by the duty ratio of light source control signal, when by the exposure of every a line
The long readout time for being set as being substantially equal to every a line, it will be appreciated by a person skilled in the art that other settings be also it is feasible,
As long as distinguishable striped can be showed.In order to describe for the sake of simplicity, having used light source and cmos imaging device in Fig. 8
Between synchronization so that when the time of the opening and closing of light source corresponds roughly to the exposure of certain a line of cmos imaging device
Long beginning or end time, it will be recognized to those skilled in the art that even if the two fails synchronization as shown in Figure 8, it can also
To show apparent striped on cmos imaging device, at this point, there may be some transition stripeds, but light source is certainly existed
The row (namely most bright striped) that the row (namely most dark striped) and light source exposed when closing always exposes when being always on,
Between the two every a pixel.The light and shade variation (namely striped) of this pixel column can be detected easily out (for example, passing through
Compare the brightness or gray scale of some pixels in light source imaging region).Further, exposure when being closed always even if there be no light source
The row (namely most bright striped) that the row (namely most dark striped) and light source of light expose when being always on, when if there is exposure
Between inner light source open part t1 and be less than certain time length or account for the row (namely compared with dark fringe) of entire exposure time small percentage,
With time for exposure inner light source open part t2 be greater than certain time length or account for entire exposure time larger proportion row (namely compared with
Bright fringes), and t2-t1 > light and shade striped difference threshold (such as 10 microseconds) or t2/t1 > light and shade stripe ratios threshold value (such as 2),
Light and shade variation between these pixel columns can also be detected.Above-mentioned light and shade striped difference threshold and proportion threshold value and cursor
Sign and issue the correlations such as luminous intensity, sensor devices attribute, shooting distance.It will be understood by those skilled in the art that other threshold values are also can
Capable, as long as the distinguishable striped of computer can be showed.When identifying striped, light source institute at this time can be determined
The information of transmitting, such as binary data 0 or data 1.
Fringe counting method method according to an embodiment of the invention is as follows: obtaining the image of optical label, utilizes projection
Mode is partitioned into the imaging region of light source；(for example, different distance, different light source scintillation frequencies etc.) is collected under different configurations
There is striped picture and without striped picture；The picture of all collections is uniformly normalized into a particular size, such as 64*16 picture
Element；Each pixel characteristic is extracted as input feature vector, constructs Machine learning classifiers；Two discriminant classifications are carried out to judge being item
Line picture or non-striped picture.For fringe counting method, those of ordinary skill in the art can also use well known in the art
What other methods is handled, this is no longer described in detail.
The strip-shaped light source for being 5 centimetres for a length, when using mobile phone common currently on the market, resolution ratio, which is arranged, is
1080p, when being shot apart from its 10 meters of remote place (that is, apart from 200 times for light source length), the strip-shaped light source
Big appointment occupies 6 pixels in its longitudinal direction, if each width of fringe is 2 pixels, in the width of 6 pixels
Can be showed in the width range of multiple obvious elements in range can show at least one apparent striped, can be easy to
Ground identifies.If higher resolution ratio is arranged, or optical zoom is used, in farther distance, such as distance is light source
At 300 times of length or 400 times, striped also can recognize that.
Controller can also make light source working in second mode.In one embodiment, under the second mode, with first
The different another frequency of mode come change light source sending light attribute, such as open and close light source.In one embodiment,
Compared to first mode, the opening and closing frequency of light source is can be improved in controller under the second mode.For example, first mode
Frequency can be greater than or equal to 8000 times/second, and the frequency of second mode can be greater than the frequency of first mode.For Fig. 6 institute
The situation shown can configure light source to open and close at least in the time for exposure inner light source of every a line of cmos imaging device
Once.Fig. 9 shows the time for exposure inner light source in every a line and opens and closes only primary situation, wherein the top of Fig. 9
Signal is light source control signal, and high level corresponds to the unlatching of light source, and low level corresponds to the closing of light source.Due to every
In the time for exposure of a line, light source can all open and close once in an identical manner, and the exposure that each time for exposure obtains is strong
It is substantially uniform to spend energy, therefore there is no notable differences for the brightness between each pixel column of light source being ultimately imaged, thus
There is no stripeds.It will be understood by those skilled in the art that higher opening and closing frequency is also feasible.In addition, in order to retouch
State for the sake of simplicity, used in Fig. 9 it is synchronous between light source and cmos imaging device so that the opening time of light source is substantially right
Should at the beginning of the exposure time of certain a line of cmos imaging device, it will be recognized to those skilled in the art that even if
The two fails synchronization as shown in Figure 9, and the brightness between each pixel column of light source being ultimately imaged will not exist obvious poor
It is different, from striped may be not present.When cannot recognize that striped, can determine the information that light source is transmitted at this time, for example, two into
Data 1 or data 0 processed.It, will not when light source working of the invention is under above-mentioned first mode or second mode for human eye
Perceive any scintillation.In addition, human eye may be discovered when in order to avoid switching between the first mode and the second mode
The scintillation arrived can set roughly equal for the duty ratio of first mode and second mode, to realize in different moulds
Roughly the same luminous flux under formula.
In another embodiment, under the second mode, direct current can be provided to light source, so that light source issues attribute base
Originally the light that will not be changed, thus, a frame of the light source obtained when being shot by cmos image sensor to light source
Striped will not be presented on image.In addition, in this case, the roughly the same light that also may be implemented in different modes is logical
Amount, to avoid the scintillation that human eye may be perceived when switching between the first mode and the second mode.
Fig. 8 above, which is described, to be changed by the intensity for the light for issuing light source (for example, by opening or closing light
Source) Lai Chengxian striped embodiment, in another embodiment, as shown in Figure 10, can also pass through make light source issue light wave
Long or color changes striped is presented.It include the red colored lamp of capable of emitting feux rouges in the embodiment shown in Figure 10, in light source
With the blue lamp of capable of emitting blue light.Two signals on the top of Figure 10 are respectively red optical control signal and blue light control signals,
In, high level corresponds to the unlatching of respective sources, and low level corresponds to the closing of respective sources.The red optical control signal and indigo plant
180 ° of the phase offset of optical control signal, that is, the two level is opposite.It, can by red optical control signal and blue light control signals
So that light source alternately issues red light and blue light outward, thus when light source is imaged using cmos imaging device
Red Blue Streak line can be showed.
Part corresponding with light source whether there is striped on a frame image by determining the shooting of cmos imaging device, can be with
Determine the information that every frame image is transmitted, such as binary data 1 or data 0.Further, it is shot by cmos imaging device
The continuous multiple image of light source can determine the information sequence being made of binary data 1 and 0, realize light source to CMOS
The information of image device (such as mobile phone) is transmitted.In one embodiment, when the company for passing through cmos imaging device photographic light sources
When continuous multiple image, it can be controlled by controller, so that the switching time interval etc. between the operating mode of light source
In the time span of one whole frame of cmos imaging device imaging, thus realize the frame synchronization of light source and image device, i.e., every frame
Transmit the information of 1 bit.For the shooting speed of 30 frames/per second, the information of 30 bits can be transmitted each second, space encoder reaches
To 230, which may include for example, starting frame flag (frame head), the ID of optical label, password, identifying code, website information, address
Information, timestamp or its different combination etc..The ordinal relation of above-mentioned various information can be set according to structural method,
Form packet structure.The complete packet structure is often received, is considered as and obtains one group of partial data (data
Packet), and then reading data and check analysis can be carried out to it.The following table shows data according to an embodiment of the invention
Pack arrangement:
| Frame head | Attribute (8bit) | Data bit (32bit) | Check bit (8bit) | Postamble |
In the above description, it is determined by judging to whether there is striped in every frame image at the imaging position of light source
The information that the frame image is transmitted.It in other embodiments, can be by identifying in every frame image at the imaging position of light source
Different stripeds determine different information that the frame image is transmitted.For example, in the flrst mode, the attribute for the light that light source issues
Changed with first frequency, is presented on the image so as to light source obtained when being shot by cmos image sensor to light source
First striped out；Under the second mode, the attribute for the light that light source issues is changed with second frequency, so as to pass through cmos image
Second striped different from first striped is showed on the image of light source obtained when sensor shoots light source.Striped
It is different can be such as based on different width, color, brightness or their any combination, as long as the difference can be identified
?.
In one embodiment, the striped of different in width can be realized based on different attribute change frequencies, for example,
Under first mode, light source can be worked in mode as shown in Figure 8, to realize that width is the first of about two pixels
Line；Under the second mode, can by each period of the light source control signal in Fig. 8 high level and it is low level continue when
Between be respectively modified as original twice, it is specific as shown in figure 11, to realize that width is second of striped of about four pixels.
In another embodiment, the striped of different colours may be implemented, for example, light source can be arranged with including
The blue lamp of the red colored lamp of capable of emitting feux rouges and capable of emitting blue light can close blue lamp, and make red colored lamp in the flrst mode
Mode as shown in Figure 8 works, to realize red-black striped；Under the second mode, red colored lamp can be closed, and makes blue lamp such as
Mode shown in Fig. 8 works, to realize blue-black striped.In the above-described embodiments, it uses in the first mode and in a second mode
Identical change frequency realizes red-black striped and blue-black striped, it will be appreciated that in the first mode and in a second mode may be used
To use different attribute change frequencies.
In addition, realizing more than two striped it will be understood by those skilled in the art that can be further advanced by indicate not
Only two kinds of information, for example, including that third mould can further be arranged in the embodiment of red colored lamp and blue lamp in above-mentioned light source
Formula in the manner shown in fig. 10 controls red colored lamp and blue lamp under the third mode to realize red Blue Streak line, i.e.,
Three kinds of information.Obviously, alternatively it is also possible to further transmit another information by the way that the fourth mode of striped is not presented, i.e.,
4th kind of information.Can arbitrarily select in above-mentioned four kinds of modes it is a variety of carry out information transmitting, can also be further combined with it
His mode, as long as different modes generates different candy strips.
Figure 12 is shown for the LED light of 16000 frequency scintillations per second, (duration in each period is
62.5 microseconds, wherein opening time and to close duration be respectively about 31.25 microseconds), using the imaging device of 1080p resolution ratio,
And in the case where by every row exposure time setting 14 microseconds, by testing the striped on obtained image.It can from Figure 12
Out, the striped of substantially 2-3 pixel wide is presented.Figure 13, which is shown, is adjusted to every for the LED light flicker frequency in Figure 12
Second 8000 times (duration in each period is 125 microseconds, and wherein opening time and closing duration are respectively about 62.5 microseconds)
Afterwards, in the case where other conditions are constant by testing the striped on obtained image.As can be seen from Figure 13, it presents big
Cause the striped for 5-6 pixel wide.Figure 14, which is shown, is adjusted to 64000 times per second (often for the LED light flicker frequency in Figure 12
The duration in a period is 15.6 microseconds, and wherein opening time and closing duration are respectively about 7.8 microseconds) after, at other
Striped is not present, the reason is that in every 14 microsecond of row exposure time in the image obtained in the case that part is constant by experiment thereon
Substantially cover the opening time and a closing duration of LED light.
The situation using a light source is described above, in some embodiments, it is also possible to using two or more
Light source.Controller can independently control the operation of each light source.Figure 15 is use according to an embodiment of the invention
One image of the optical label of three arbitrary sources, wherein striped occurs in the imaging position of two light sources, light source
There is not striped in imaging position, this frame image of this group of light source can be used for transmitting information, such as binary data 110.
It in one embodiment, can also include the one or more positioning transmitted positioned at information near light source in optical label
Mark, the positioning identifier for example can be the lamp of specific shape or color, which can for example keep being always at work.This is fixed
The user that bit identification can contribute to cmos imaging device (such as mobile phone) easily finds out optical label.In addition, working as cmos imaging
When device is arranged to the mode shot to optical label, the imaging of positioning identifier is obvious, readily identified.Therefore, cloth
The one or more positioning identifiers being placed near information transmitting light source can also facilitate mobile phone and quickly determine information transmitting light
The position in source, so that facilitating identification corresponds to the imaging region of information transmitting light source with the presence or absence of striped.In one embodiment
In, when recognizing whether striped, positioning identifier can be identified in the picture first, to find light in the picture
The approximate location of label.It, can be based on opposite between positioning identifier and information transmitting light source after identifying positioning identifier
Positional relationship determines that the imaging position of information transmitting light source is covered in one or more regions in image, the region.Then, may be used
To be identified that judge whether there is striped, or there are which type of stripeds for these regions.Figure 16 is according to this hair
One image of the optical label including positioning identifier of bright one embodiment is passed including three horizontally disposed information
Pass light source, and two arranged vertically the positioning identifier lamp positioned at information transmitting light source two sides.
It in one embodiment, may include ambient light detection circuit in optical label, which can use
In the intensity of detection environment light.Controller can adjust light source based on the intensity of the environment light detected and be issued when opening
Light intensity.For example, when environment light is stronger (such as daytime), so that the intensity for the light that light source issues is bigger, and
When environment light is weaker (such as at night), so that the intensity for the light that light source issues is smaller.
It in one embodiment, may include ambient light detection circuit in optical label, which can use
In the frequency of detection environment light.Controller can adjust light source based on the frequency of the environment light detected and be issued when opening
Light frequency.For example, the light that toggle lights issue is to another vacant frequency when environment light exists and moves light source with stroboscopic.
It, may shadow if there is a large amount of noise, or when identification distance is very remote in actual application environment
Ring the accuracy of identification.Therefore, in order to which the accuracy for improving identification removes in optical label in one embodiment of the invention
Except the above-mentioned light source (for the sake of clarity, hereinafter referred to as " light source data ") for transmitting information, may be used also
To include at least one reference light source.Reference light source itself is not used to transmitting information, but for assisting in identifying light source data
The information transmitted.Reference light source is physically can be similar with light source data, but with predetermined operating mode
Work, the operating mode can be one of various operating modes of light source data or a variety of.In this way, it is possible to by data
The decoding of light source is converted to the calculating that (such as: correlation) is matched with the image of reference light source, to improve decoded standard
True property.
Figure 17 shows it is according to an embodiment of the invention include a reference light source and two light source datas
Optical label, wherein three light sources that have been arranged side by side, first light source is as reference light source, other two light source is respectively as first
Light source data and the second light source data.It should be noted that in optical label the quantity of reference light source can be it is one or more
It is a, and it is not limited to one；Equally, the quantity of light source data is also possible to one or more, and is not limited to two.In addition,
Because reference light source assists in identifying for providing, shape, size are not required identical as light source data.For example, one
In a embodiment, the length of reference light source can be the half of light source data.
In one embodiment, each of the first light source data and the second light source data shown in Figure 17 are configured
It is wide with the image, the striped that for example show no stripe pattern respectively, width of fringe is 2 pixels to may operate in Three models
Degree is the image of 4 pixels.And reference light source can be configured as and work in one of Three models always to show above-mentioned three kinds
One of image, or work alternatively in different mode, to alternately display any two kinds in above-mentioned three kinds of images in different frame
Or all, so that the image recognition for light source data provides benchmark or reference.It is alternately aobvious in different frame with reference light source
Show image that width of fringe is 2 pixels and width of fringe be 4 pixels image for, the figure of the light source data in each frame
As can be with image (these figures of the reference light source in present frame and consecutive frame (example frame as in the previous or frame) later
The image that width of fringe is 2 pixels and the image that width of fringe is 4 pixels are centainly contained as in) it is compared, to sentence
Break the type of its image；Alternatively, the continuous multiple frames image of the reference light source in a period can also be acquired, by odd number frame number
Image and even number frame number image respectively as one group, the feature of each group of image is averaged (for example, asking each
The average value of the width of fringe of group image), and differentiate which group image corresponds to width of fringe for 2 pictures according to width of fringe
Element image or width of fringe be 4 pixels image, thus obtain width of fringe be 2 pixels image average characteristics and
Width of fringe is the average characteristics of the image of 4 pixels, later, it can be determined that whether the image of light source data in each frame
Meet one of these average characteristics.
Since reference light source is located at roughly the same position with light source data, and it is subjected to identical environmental lighting conditions, does
It disturbs, noise etc., therefore it can provide one or more benchmark images or reference picture for image recognition in real time, thus
The Stability and veracity of the identification for the information transmitted to light source data can be improved.For example, can be by by light source data
Imaging and the imaging of reference light source are compared to accurately identify the operating mode of light source data, to identify that it is passed
The data passed.
Further, according to the image-forming principle of CMOS, when multiple light sources are with identical frequency but different phases carries out attribute
When variation, the candy strip of same widths but out of phase can be generated, the candy strip of same widths but out of phase can make
Accurately determined with matched method.In one embodiment, it can control reference light source with scheduled mode of operation,
The striped that width is 4 pixels can be for example showed under the operating mode, on the image of the reference light source.At this point, if simultaneously
Control light source data works in this operating mode, and makes light source data consistent with the phase of reference light source, then the data
The striped showed on the image of light source and the striped showed on the image of reference light source are similar (for example, width is also 4 pictures
Element) and phase difference is not present；If controlling light source data simultaneously to work in this operating mode, but make light source data and reference
The phase of light source is inconsistent (for example, 90 °, 180 ° of phase phase difference (that is, reverse phase), 270 ° etc., preferably differ 180 °), then should
The striped showed on the image of light source data and the striped showed on the image of reference light source are similar (for example, width is also 4
A pixel) but there are phase differences.
Figure 18 shows an imaging timing diagram of the cmos imaging device for optical label shown in Figure 17.Figure 18's
Top shows reference light source, the first light source data and the respective control signal of the second light source data, and wherein high level can be right
Should be in the unlatching of light source, and low level can correspond to the closing of light source.As shown in figure 18, the frequency phase of three control signals
Together, and the first light source data control signal is consistent with the reference light source control phase of signal, and the second light source data controls signal
With 180 ° of phase phase difference of reference light source control signal.By this method, when using cmos imaging device to the optical label carry out at
Width substantially 4 pixels can be all showed when picture, in the imaging of reference light source, the first light source data and the second light source data
Striped, but the fringe phase in the imaging of the first light source data and reference light source is consistent (for example, the bright wisp of reference light source
Row where line is consistent with the row where the bright fringes of the first light source data, the row where the dark fringe of reference light source and
Row where the dark fringe of one light source data is consistent), and the second light source data and the striped phase in the imaging of reference light source
Position is reverse phase (for example, the row where the bright fringes of reference light source and the row where the dark fringe of the second light source data are consistent
, the row where the dark fringe of reference light source and the row where the bright fringes of the second light source data are consistent).
Phase controlling is used by providing reference light source, and to light source data, it can be in the case where improving recognition capability
Further promote light source data transferable information content every time.For optical label shown in Figure 17, if the first light source data and
Second light source data is configured as may operate in first mode and second mode, wherein striped is not presented in the flrst mode,
Striped is presented under the second mode.If not providing reference light source, each light source data can transmit in one frame of image
One of two kinds of data, such as 0 or 1.And it works by providing reference light source and it being made to work in second mode, and in light source data
Phase controlling is further provided for when second mode, so that second mode itself can be used for transmitting more than one data.
For the mode shown in Figure 18, it may be used for one of two kinds of data of transmitting in conjunction with the second mode of phase controlling itself, from
And each light source data can transmit one of three kinds of data in one frame of image.
Aforesaid way so that the phase controlling to light source data is achieved, therefore can be mentioned by introducing reference light source
The density of encoding of the light source data of high optical label, and the density of encoding of entire optical label can be correspondingly improved.For example, for
Embodiment described above, if not using reference light source (that is, using reference light source as third light source data), each data
Light source can transmit one of two kinds of data in one frame of image, thus entire optical label (including three light source datas) is in a frame figure
2 can be transmitted as in3One of kind data combination；And if using reference light source, each light source data in one frame of image can be with
One of three kinds of data are transmitted, thus entire optical label (including two light source datas) can transmit 3 in one frame of image2Kind data
One of combination.If increasing the quantity of light source data in optical label, which can be more obvious, for example, for described above
Embodiment, if, in the case where not using reference light source, entire optical label (includes using the optical label comprising five light sources
Five light source datas) 2 can be transmitted in one frame of image5One of kind data combination；And select one of light source as ginseng
In the case where examining light source, entire optical label (including four light source datas) can transmit 3 in one frame of image4Kind data combine it
One.Similarly, by increasing the quantity of reference light source in optical label, the coding that also can be further improved entire optical label is close
Degree.It is provided below and the image of the image of light source data and reference light source is done into some of matching primitives (such as: correlation calculations)
Test data.Wherein, the meaning of calculated result is defined as:
0.00~± 0.30 microfacies is closed
± 0.30~± 0.50 reality closes
± 0.50~± 0.80 significant correlation
± 0.80~± 1.00 is highly relevant
Wherein, positive value, which represents, is positively correlated, and negative value represents negative correlation.If the frequency and phase of light source data and reference light source
All be consistent, then in the ideal situation, the image of two light sources is completely the same, so that the result of correlation calculations is+1, table
Show perfect positive correlation.If the frequency of light source data and reference light source is consistent, but opposite in phase, then in the ideal situation,
The width of fringe of the image of two light sources is identical, but the position of bright dark fringe is just the opposite, thus the result of correlation calculations be-
1, indicate perfect negative correlation.It is appreciated that, due to the presence of interference, error etc., being difficult to obtain complete during actual imaging
It is positively correlated the image with perfect negative correlation.If light source data works in different operating modes from reference light source to show difference
The striped or one of them of width do not show striped, then the image of the two is usually micro- relevant.
Following Tables 1 and 2 is respectively illustrated when light source data uses identical frequency same phase with reference light source
Correlativity calculation result and the correlativity calculation result when light source data uses identical frequency opposite phase with reference light source.Its
In be directed to every kind of situation, have taken five images respectively, by every frame image reference light source image and the frame image in number
Correlation calculations are carried out according to light source image.
Correlativity calculation result when table 1- identical frequency same phase
Correlativity calculation result when table 2- identical frequency opposite phase
As can be seen from the above table, when light source data and reference light source use identical frequency same phase, correlation calculations
As a result it can show that both of which is significant positively related.When light source data and reference light source use identical frequency opposite phase
When, correlativity calculation result can show that both of which is significant negatively correlated.
General 15 times of middle two dimensional code or so of identification distance compared with the prior art, at least the 200 of optical label of the invention
Identification distance again has apparent advantage.The remote recognition capability is particularly suitable for outdoor identification, with 200 times of identification away from
From for, the light source for being 50 centimetres for a length being arranged on street, the people within the scope of 100 meters of the light source all
It can be interacted by mobile phone and the light source.In addition, the solution of the present invention does not require cmos imaging equipment to be located at and optical label
Fixation distance at, do not require the time synchronization between cmos imaging equipment and optical label, and do not need to each yet
The boundary of line and width are accurately detected, and therefore, have extremely strong stability and reliability in the transmission of actual information.
For the ginseng of " each embodiment ", " some embodiments ", " one embodiment " or " embodiment " etc. in this specification
Examine reference is that the special characteristic in conjunction with described in the embodiment, structure or property are included at least one embodiment.Cause
This, phrase " in various embodiments ", " in some embodiments ", " in one embodiment " or " in embodiment " etc. exists
The appearance of each place not necessarily refers to identical embodiment in the whole instruction.In addition, special characteristic, structure or property can
To combine in any way as suitable in one or more embodiments.Therefore, in conjunction with shown in one embodiment or description
Special characteristic, structure or property can wholly or partly with the feature, structure or property of one or more other embodiments
It unlimitedly combines, as long as the combination is not non-logicality or cannot work.In addition, each element in illustrations is only
Only for schematically illustrate, it is not necessarily drawn to scale.
It is thus described several aspects of at least one embodiment of this invention, it will be understood that those skilled in the art
For be easy to carry out various changes, modification and improvement.This changes, modifications and improvement are intended in the spirit and scope of the present invention
It is interior.
Claims (17)
1. a kind of optical communication apparatus comprising:
At least one light source data, for transmitting information；
At least one reference light source, for assisting in identifying the information of the light source data transmitting；And
Controller, is configured as controlling each light source data and works at least two modes, and at least two mode includes
First mode and second mode, wherein the first mode and the second mode are for transmitting different information, the control
Device, which is additionally configured to control each reference light source, works at least one of the first mode and second mode mode；
Wherein, for each light source data or each reference light source, in the first mode, the attribute for the light which issues
Changed with first frequency, to be presented on the image of the light source obtained when being shot by cmos image sensor to the light source
Striped out, in the second mode, the light which issues are obtained when being shot by cmos image sensor to the light source
Striped is not presented on the image of the light source obtained.
2. optical communication apparatus according to claim 1, wherein the controller is configured as at least one described ginseng of control
It examines in light source reference light source and works in the first mode.
3. optical communication apparatus according to claim 2, wherein when controller control any data light source working is in institute
When stating first mode, the controller further controls the phase of the light source data so that its with equally work in described
The phase of the reference light source of one mode is identical or different.
4. a kind of method for transmitting information using light source, the light source includes at least one light source data for transmitting information
With at least one reference light source of the information for assisting in identifying the light source data transmitting, which comprises
Each light source data, which is controlled, according to the information to be transmitted works in one of at least two modes, at least two modes packet
Include first mode and second mode, wherein the first mode and the second mode are for transmitting different information；
It controls each reference light source and works in the first mode or second mode,
Wherein, for each light source data or each reference light source, in the first mode, the attribute for the light which issues
Changed with first frequency, to be presented on the image of the light source obtained when being shot by cmos image sensor to the light source
Striped out, in the second mode, the light which issues are obtained when being shot by cmos image sensor to the light source
Striped is not presented on the image of the light source obtained.
5. according to the method described in claim 4, wherein, controlling a reference light source work at least one described reference light source
Make in the first mode.
6. according to the method described in claim 5, wherein, when control any data light source working is when the first mode, into
One step controls the phase of the light source data, so that it is identical as the phase for the reference light source for equally working in the first mode
Or it is different.
7. a kind of optical communication apparatus, comprising:
At least one light source data, for transmitting information；
At least one reference light source, for assisting in identifying the information of the light source data transmitting；And
Controller, is configured as controlling each light source data and works at least two modes, and at least two mode includes
First mode and second mode, wherein the first mode and the second mode are for transmitting different information, the control
Device, which is additionally configured to control each reference light source, works at least one of the first mode and second mode mode,
Wherein, for each light source data or each reference light source, in the first mode, the attribute for the light which issues
Changed with first frequency, to be presented on the image of the light source obtained when being shot by cmos image sensor to the light source
Striped out, in the second mode, the attribute for the light which issues are changed with second frequency, to pass by cmos image
The item different from the striped under the first mode is showed on the image of the light source obtained when sensor shoots the light source
Line.
8. optical communication apparatus according to claim 7, wherein the controller is configured as at least one described ginseng of control
The reference light source examined in light source is worked alternatively in the first mode and the second mode.
9. optical communication apparatus according to claim 7, wherein when controller control any data light source working is in institute
When stating first mode or the second mode, the controller further controls the phase of the light source data so that its with it is same
The phase that sample works in the reference light source of the first mode or the second mode is identical or different.
10. a kind of method for transmitting information using light source, the light source includes at least one data light for transmitting information
At least one reference light source in source and the information for assisting in identifying the light source data transmitting, which comprises
Each light source data, which is controlled, according to the information to be transmitted works in one of at least two modes, at least two modes packet
Include first mode and second mode, wherein the first mode and the second mode are for transmitting different information；
It controls each reference light source and works in the first mode or second mode,
Wherein, for each light source data or each reference light source, in the first mode, the attribute for the light which issues
Changed with first frequency, to be presented on the image of the light source obtained when being shot by cmos image sensor to the light source
Striped out, in the second mode, the attribute for the light which issues are changed with second frequency, to pass by cmos image
The item different from the striped under the first mode is showed on the image of the light source obtained when sensor shoots the light source
Line.
11. according to the method described in claim 10, wherein, controlling a reference light source at least one described reference light source
It works alternatively in the first mode and the second mode.
12. according to the method described in claim 10, wherein, when control any data light source working is in the first mode or institute
When stating second mode, further control the phase of the light source data so that its with equally work in the first mode or institute
The phase for stating the reference light source of second mode is identical or different.
13. a kind of device that information is transmitted using light source, including the controller for being controlled the light source, the control
Device processed is configured for realizing method described in any one of claim 4-6 and 10-12.
14. a kind of method for the information for receiving the transmission of the optical communication apparatus as described in any one of claim 1-3 and 7-9, institute
The method of stating includes:
The optical communication apparatus is imaged by cmos image sensor；
Extract the image of at least one light source data and the image of at least one reference light source；
Compare the image of at least one light source data and the image of at least one reference light source；And
The information of at least one light source data transmitting is determined based in part on the comparison result.
15. according to the method for claim 14, wherein the image of at least one relatively described light source data and it is described at least
The image of one reference light source includes: the image and at least one reference light source for judging at least one light source data
Correlation between image.
16. a kind of device for the information for receiving the transmission of the optical communication apparatus as described in any one of claim 1-3 and 7-9, packet
Cmos image sensor, processor and memory are included, computer program is stored in the memory, the computer program exists
Method described in any one of claim 14-15 is implemented for when being executed by the processor.
17. a kind of storage medium, wherein being stored with computer program, the computer program is implemented for when executed
Method described in any one of claim 4-6,10-12 and 14-15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711374915.9A CN109936694B (en) | 2017-12-19 | 2017-12-19 | Optical communication device comprising reference light source and corresponding information transmission and reception method |
| PCT/CN2018/117869 WO2019120053A1 (en) | 2017-12-19 | 2018-11-28 | Optical communication apparatus having reference light source, and corresponding information transmitting and receiving methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711374915.9A CN109936694B (en) | 2017-12-19 | 2017-12-19 | Optical communication device comprising reference light source and corresponding information transmission and reception method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110969044A (en) * | 2019-11-29 | 2020-04-07 | 联想(北京)有限公司 | Code scanning device and code scanning method |
| CN112468714A (en) * | 2019-09-09 | 2021-03-09 | 北京外号信息技术有限公司 | Method and electronic device for determining imaging area of optical communication apparatus |
| CN112542107A (en) * | 2019-09-20 | 2021-03-23 | 北京外号信息技术有限公司 | Panel type optical communication device and method for manufacturing the same |
| CN114070402A (en) * | 2020-07-30 | 2022-02-18 | 北京外号信息技术有限公司 | Panel type optical communication device and method for transmitting information using the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329545A (en) * | 2007-06-18 | 2008-12-24 | 索尼株式会社 | Recording and regenerating device and method, recording device and method |
| CN101542611A (en) * | 2007-05-22 | 2009-09-23 | 索尼株式会社 | Recording device, recording/reproducing method, and reproducing method |
| JP2013054336A (en) * | 2011-09-02 | 2013-03-21 | Mitsutoyo Corp | Apparatus for exact reconstruction of object wave in off-axis digital holography |
| CN103427902A (en) * | 2013-04-09 | 2013-12-04 | 北京半导体照明科技促进中心 | Method, device and system of utilizing visible light to transmit information and light source |
| CN104363382A (en) * | 2014-04-24 | 2015-02-18 | 北京国承万通信息科技有限公司 | Method and device for transmitting/acquiring information by visible light |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2503852A1 (en) * | 2011-03-22 | 2012-09-26 | Koninklijke Philips Electronics N.V. | Light detection system and method |
| CN107210815B (en) * | 2015-02-10 | 2020-07-31 | 布莱特编码技术有限公司 | System and method for providing optically encoded information |
| CN106209251A (en) * | 2016-07-12 | 2016-12-07 | 京东方科技集团股份有限公司 | Information getting method and system, display terminal, mobile terminal |
-
2017
- 2017-12-19 CN CN201711374915.9A patent/CN109936694B/en active Active
-
2018
- 2018-11-28 WO PCT/CN2018/117869 patent/WO2019120053A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101542611A (en) * | 2007-05-22 | 2009-09-23 | 索尼株式会社 | Recording device, recording/reproducing method, and reproducing method |
| CN101329545A (en) * | 2007-06-18 | 2008-12-24 | 索尼株式会社 | Recording and regenerating device and method, recording device and method |
| JP2013054336A (en) * | 2011-09-02 | 2013-03-21 | Mitsutoyo Corp | Apparatus for exact reconstruction of object wave in off-axis digital holography |
| CN103427902A (en) * | 2013-04-09 | 2013-12-04 | 北京半导体照明科技促进中心 | Method, device and system of utilizing visible light to transmit information and light source |
| CN104243030A (en) * | 2013-04-09 | 2014-12-24 | 珠海横琴华策光通信科技有限公司 | Method and device for transmitting/obtaining information through visible light signals |
| CN104363382A (en) * | 2014-04-24 | 2015-02-18 | 北京国承万通信息科技有限公司 | Method and device for transmitting/acquiring information by visible light |
| CN105187732A (en) * | 2014-04-24 | 2015-12-23 | 北京国承万通信息科技有限公司 | Method and device for transmitting/acquiring information with visible light signals of different colors from light sources |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112468714A (en) * | 2019-09-09 | 2021-03-09 | 北京外号信息技术有限公司 | Method and electronic device for determining imaging area of optical communication apparatus |
| CN112468714B (en) * | 2019-09-09 | 2022-06-28 | 北京外号信息技术有限公司 | Method and electronic device for determining imaging area of optical communication device |
| CN112542107A (en) * | 2019-09-20 | 2021-03-23 | 北京外号信息技术有限公司 | Panel type optical communication device and method for manufacturing the same |
| CN110969044A (en) * | 2019-11-29 | 2020-04-07 | 联想(北京)有限公司 | Code scanning device and code scanning method |
| CN110969044B (en) * | 2019-11-29 | 2021-04-13 | 联想(北京)有限公司 | Code scanning device and code scanning method |
| CN114070402A (en) * | 2020-07-30 | 2022-02-18 | 北京外号信息技术有限公司 | Panel type optical communication device and method for transmitting information using the same |
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| CN109936694B (en) | 2020-12-11 |
| WO2019120053A1 (en) | 2019-06-27 |
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